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Post by chewbaca on Oct 28, 2017 12:48:05 GMT -5
Engine history unknown . . so many fuel-spark-compression related possibilities! If previous owner modified variator . . belt could be rubbing starter gear (Bendix). DO NOT run engine like in this video . . Bendix could become a missile! That belt is trash Cracks in the top rubber like that put extra stress on the tensile fibers by causing a sharp bend and by amplification of any vibration problems On a fifty with the starter where it is a broken belt can wrap up in the drive pulley and beat the #&$-$+#(@ out of it |
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frustrated
by: chewbaca - Oct 28, 2017 12:30:09 GMT -5
Post by chewbaca on Oct 28, 2017 12:30:09 GMT -5
If it has a pump then it does not have a petcock If it has both  ? Well then it's wrong It's an either or kind of thing |
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frustrated
by: chewbaca - Oct 27, 2017 12:45:39 GMT -5
Post by chewbaca on Oct 27, 2017 12:45:39 GMT -5
Does that model have a fuel pump or is it gravity fed
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frustrated
by: chewbaca - Oct 27, 2017 11:00:57 GMT -5
Post by chewbaca on Oct 27, 2017 11:00:57 GMT -5
From what you say is sounds like a vacuum leak
Maybe you have a cracked line ?
Check for a hose knocked loose
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Post by chewbaca on Oct 25, 2017 14:01:01 GMT -5
The worst most horrible things make the best comedy
That's why every one knows so many baby in a blender jokes
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Post by chewbaca on Oct 23, 2017 9:48:13 GMT -5
Big sigh 😏
Rich guy toys
Kicks a rock 😒
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Post by chewbaca on Oct 23, 2017 9:11:37 GMT -5
I would really like to have a cub
I think I would fit on one much better than I do a scooter
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Post by chewbaca on Oct 23, 2017 8:42:18 GMT -5
Before you put the new line on
It may be worth it to you to put some heat shrink on the spots
That got worn down on the old line
I use electric tape but I don't care how mine looks
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Post by chewbaca on Oct 22, 2017 23:23:58 GMT -5
So get a new one
It's not so expensive
Especially compared to a car
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Post by chewbaca on Oct 22, 2017 9:34:57 GMT -5
Omelet pan
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Post by chewbaca on Oct 19, 2017 10:08:16 GMT -5
The size of the belt is determined by long or short case
The size of the wheel is handled in the gear box
You can use the 835 belt in the long case
it's good for gas mileage and high speed cruising
but it really does bad at stop and go
Don't use the 842 in the short case it's to big and doesn't seat properly
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Post by chewbaca on Oct 18, 2017 18:25:20 GMT -5
No
A longer belt drops the gear
Sort of the opposite of the effect your looking for if your trying to compensate for worn pars
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Post by chewbaca on Oct 18, 2017 12:30:35 GMT -5
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Post by chewbaca on Oct 18, 2017 11:34:58 GMT -5
Ah ok
To start with remove the entire veriator and completely disassembled it. Take a measurement of the length of the steel tube. That tube is the boss.
Then measure the thickness of the card stock
File off 090 % of the thickness of the card stock
From the end of the boss.
Cut a washer from the card stock and slide it up against the kick start gear. Slide on the boss the steal cam plate and the pulley fan. Torque the nut down and the remove it all again.
Remeasure the card stock washer as it will have been crushed thinner. Add the length of the boss and the washer together
And file the boss down until the two add up.
Hopefully it's nice and close if it's to short you can add some
writing paper. When the length is the same as the original measurement resemble the variator and install with the card stock shim next to the motor
Oh and just in case you were wondering paper under that much pressure is waterproof
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Post by chewbaca on Oct 17, 2017 11:15:57 GMT -5
A short fan is actually a really bad idea
A stock fan buts up against the air shroud and prevents the air from curling over and just spinning like a torus inside the shroud. The short fan is not only pumping less air but it's also pumping the same air over and over with probably only half going to cool the motor
So the best you can expect is 25% effect with 50% less pumping loss
You can correct this by glueing a tube from the front of the short fan to the air shroud
But if you're going to be doing that much work you may as well
Instal an electric fan
And get 100% effect with 0% pumping loss
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